Communications – electrical: acoustic wave systems and devices – Transponders – Sonobuoys and sonobuoy systems
Patent
1988-03-28
1990-02-13
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Transponders
Sonobuoys and sonobuoy systems
367 20, 441 1, 114326, H04B 159
Patent
active
049012878
ABSTRACT:
A sonar array connected to a data unit includes a substantial number of hydrophone units distributed along a small diameter cable having a substantial number of connecting wires, a center strength member and a tough polyurethane jacket. The hydrophone units each include a strong metal bracket bifurcated at each end and fastened to the strength member. A generally cylindrical hydrophone member is fastened to the bracket as is a circuit board including a preamplifier and the entire unit is sealed with paraxylene resin and then molded into a smooth generally cylindrical unit which is tapered at the ends and sealed to adjacent parts of the cable jacket. To minimize the cross-sectional area and the effects of cross currents, the cable is composed of a plurality of interconnected sections, each of which is of smaller cross-section and carries fewer conductors than the section next closer to the data unit. To assure that the array extends substantially vertically from the data unit, either a weight or a float is fastened to the cable at the end remote from the data unit.
REFERENCES:
patent: 3371739 (1968-03-01), Pearson
patent: 3812455 (1974-05-01), Pearson
patent: 4272835 (1981-06-01), Flood et al.
patent: 4351036 (1982-09-01), Mollere
patent: 4450543 (1984-05-01), Neeley
patent: 4491939 (1985-01-01), Carpenter
patent: 4503526 (1985-03-01), Beauducel et al.
patent: 4530075 (1985-07-01), Pearson
patent: 4716554 (1987-12-01), Depew et al.
Bridges Robert M.
Hathaway Daniel G.
Allied-Signal Inc.
McFarland James W.
Smith Robert C.
Swann Tod R.
Tarcza Thomas H.
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